16.89/8.04 MAYBE 16.89/8.04 16.89/8.05 Ultimate: Cannot open display: 16.89/8.05 This is Ultimate 0.1.24-8dc7c08-m 16.89/8.05 [2019-03-28 12:48:48,763 INFO L170 SettingsManager]: Resetting all preferences to default values... 16.89/8.05 [2019-03-28 12:48:48,765 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values 16.89/8.05 [2019-03-28 12:48:48,776 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,777 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values 16.89/8.05 [2019-03-28 12:48:48,777 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values 16.89/8.05 [2019-03-28 12:48:48,779 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values 16.89/8.05 [2019-03-28 12:48:48,780 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values 16.89/8.05 [2019-03-28 12:48:48,782 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values 16.89/8.05 [2019-03-28 12:48:48,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values 16.89/8.05 [2019-03-28 12:48:48,783 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values 16.89/8.05 [2019-03-28 12:48:48,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values 16.89/8.05 [2019-03-28 12:48:48,785 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values 16.89/8.05 [2019-03-28 12:48:48,786 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values 16.89/8.05 [2019-03-28 12:48:48,787 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values 16.89/8.05 [2019-03-28 12:48:48,788 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values 16.89/8.05 [2019-03-28 12:48:48,790 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values 16.89/8.05 [2019-03-28 12:48:48,791 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values 16.89/8.05 [2019-03-28 12:48:48,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values 16.89/8.05 [2019-03-28 12:48:48,794 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values 16.89/8.05 [2019-03-28 12:48:48,795 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values 16.89/8.05 [2019-03-28 12:48:48,797 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,798 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,798 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values 16.89/8.05 [2019-03-28 12:48:48,799 INFO L174 SettingsManager]: Resetting IcfgToChc preferences to default values 16.89/8.05 [2019-03-28 12:48:48,799 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values 16.89/8.05 [2019-03-28 12:48:48,800 INFO L177 SettingsManager]: ReqToTest provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,800 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values 16.89/8.05 [2019-03-28 12:48:48,801 INFO L174 SettingsManager]: Resetting ChcSmtPrinter preferences to default values 16.89/8.05 [2019-03-28 12:48:48,801 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values 16.89/8.05 [2019-03-28 12:48:48,802 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values 16.89/8.05 [2019-03-28 12:48:48,803 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,803 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values 16.89/8.05 [2019-03-28 12:48:48,804 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,804 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... 16.89/8.05 [2019-03-28 12:48:48,804 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values 16.89/8.05 [2019-03-28 12:48:48,805 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values 16.89/8.05 [2019-03-28 12:48:48,806 INFO L181 SettingsManager]: Finished resetting all preferences to default values... 16.89/8.05 [2019-03-28 12:48:48,806 INFO L98 SettingsManager]: Beginning loading settings from /export/starexec/sandbox/solver/bin/./../termcomp2017.epf 16.89/8.05 [2019-03-28 12:48:48,820 INFO L110 SettingsManager]: Loading preferences was successful 16.89/8.05 [2019-03-28 12:48:48,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: 16.89/8.05 [2019-03-28 12:48:48,822 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: 16.89/8.05 [2019-03-28 12:48:48,822 INFO L133 SettingsManager]: * Rewrite not-equals=true 16.89/8.05 [2019-03-28 12:48:48,822 INFO L133 SettingsManager]: * Create parallel compositions if possible=false 16.89/8.05 [2019-03-28 12:48:48,822 INFO L133 SettingsManager]: * Minimize states using LBE with the strategy=SINGLE 16.89/8.05 [2019-03-28 12:48:48,822 INFO L133 SettingsManager]: * Use SBE=true 16.89/8.05 [2019-03-28 12:48:48,823 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: 16.89/8.05 [2019-03-28 12:48:48,823 INFO L133 SettingsManager]: * Use old map elimination=false 16.89/8.05 [2019-03-28 12:48:48,823 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false 16.89/8.05 [2019-03-28 12:48:48,823 INFO L133 SettingsManager]: * Buchi interpolant automaton construction strategy=DANDELION 16.89/8.05 [2019-03-28 12:48:48,823 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true 16.89/8.05 [2019-03-28 12:48:48,823 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES 16.89/8.05 [2019-03-28 12:48:48,824 INFO L133 SettingsManager]: * Construct termination proof for TermComp=true 16.89/8.05 [2019-03-28 12:48:48,824 INFO L133 SettingsManager]: * Command for external solver (GNTA synthesis)=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:12000 16.89/8.05 [2019-03-28 12:48:48,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: 16.89/8.05 [2019-03-28 12:48:48,824 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false 16.89/8.05 [2019-03-28 12:48:48,824 INFO L133 SettingsManager]: * Check division by zero=IGNORE 16.89/8.05 [2019-03-28 12:48:48,824 INFO L133 SettingsManager]: * Check if freed pointer was valid=false 16.89/8.05 [2019-03-28 12:48:48,825 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false 16.89/8.05 [2019-03-28 12:48:48,825 INFO L133 SettingsManager]: * How to treat unsigned ints differently from normal ones=IGNORE 16.89/8.05 [2019-03-28 12:48:48,825 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: 16.89/8.05 [2019-03-28 12:48:48,825 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements 16.89/8.05 [2019-03-28 12:48:48,825 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump 16.89/8.05 [2019-03-28 12:48:48,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 16.89/8.05 [2019-03-28 12:48:48,826 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: 16.89/8.05 [2019-03-28 12:48:48,826 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles 16.89/8.05 [2019-03-28 12:48:48,826 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL 16.89/8.05 [2019-03-28 12:48:48,826 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 16.89/8.05 [2019-03-28 12:48:48,851 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp 16.89/8.05 [2019-03-28 12:48:48,864 INFO L259 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized 16.89/8.05 [2019-03-28 12:48:48,868 INFO L215 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. 16.89/8.05 [2019-03-28 12:48:48,869 INFO L271 PluginConnector]: Initializing CDTParser... 16.89/8.05 [2019-03-28 12:48:48,870 INFO L276 PluginConnector]: CDTParser initialized 16.89/8.05 [2019-03-28 12:48:48,871 INFO L430 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /export/starexec/sandbox/benchmark/theBenchmark.c 16.89/8.05 [2019-03-28 12:48:48,942 INFO L221 CDTParser]: Created temporary CDT project at /export/starexec/sandbox/tmp/c0c0a1004f3c4f4cbf6eeea5446aca37/FLAG93fc740dc 16.89/8.05 [2019-03-28 12:48:49,282 INFO L307 CDTParser]: Found 1 translation units. 16.89/8.05 [2019-03-28 12:48:49,283 INFO L161 CDTParser]: Scanning /export/starexec/sandbox/benchmark/theBenchmark.c 16.89/8.05 [2019-03-28 12:48:49,283 WARN L117 ultiparseSymbolTable]: System include stdlib.h could not be resolved by CDT -- only built-in system includes are available. 16.89/8.05 [2019-03-28 12:48:49,290 INFO L355 CDTParser]: About to delete temporary CDT project at /export/starexec/sandbox/tmp/c0c0a1004f3c4f4cbf6eeea5446aca37/FLAG93fc740dc 16.89/8.05 [2019-03-28 12:48:49,688 INFO L363 CDTParser]: Successfully deleted /export/starexec/sandbox/tmp/c0c0a1004f3c4f4cbf6eeea5446aca37 16.89/8.05 [2019-03-28 12:48:49,700 INFO L297 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### 16.89/8.05 [2019-03-28 12:48:49,702 INFO L131 ToolchainWalker]: Walking toolchain with 7 elements. 16.89/8.05 [2019-03-28 12:48:49,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- 16.89/8.05 [2019-03-28 12:48:49,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... 16.89/8.05 [2019-03-28 12:48:49,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized 16.89/8.05 [2019-03-28 12:48:49,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:48:49" (1/1) ... 16.89/8.05 [2019-03-28 12:48:49,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f8be54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:49, skipping insertion in model container 16.89/8.05 [2019-03-28 12:48:49,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.03 12:48:49" (1/1) ... 16.89/8.05 [2019-03-28 12:48:49,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode 16.89/8.05 [2019-03-28 12:48:49,738 INFO L176 MainTranslator]: Built tables and reachable declarations 16.89/8.05 [2019-03-28 12:48:49,902 INFO L206 PostProcessor]: Analyzing one entry point: main 16.89/8.05 [2019-03-28 12:48:49,914 INFO L191 MainTranslator]: Completed pre-run 16.89/8.05 [2019-03-28 12:48:49,987 INFO L206 PostProcessor]: Analyzing one entry point: main 16.89/8.05 [2019-03-28 12:48:50,003 INFO L195 MainTranslator]: Completed translation 16.89/8.05 [2019-03-28 12:48:50,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50 WrapperNode 16.89/8.05 [2019-03-28 12:48:50,004 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- 16.89/8.05 [2019-03-28 12:48:50,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- 16.89/8.05 [2019-03-28 12:48:50,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... 16.89/8.05 [2019-03-28 12:48:50,005 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized 16.89/8.05 [2019-03-28 12:48:50,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- 16.89/8.05 [2019-03-28 12:48:50,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- 16.89/8.05 [2019-03-28 12:48:50,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... 16.89/8.05 [2019-03-28 12:48:50,048 INFO L276 PluginConnector]: Boogie Preprocessor initialized 16.89/8.05 [2019-03-28 12:48:50,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- 16.89/8.05 [2019-03-28 12:48:50,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- 16.89/8.05 [2019-03-28 12:48:50,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... 16.89/8.05 [2019-03-28 12:48:50,076 INFO L276 PluginConnector]: RCFGBuilder initialized 16.89/8.05 [2019-03-28 12:48:50,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (1/1) ... 16.89/8.05 No working directory specified, using /export/starexec/sandbox/solver/bin/z3 16.89/8.05 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 (exit command is (exit), workingDir is null) 16.89/8.05 Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4560 -smt2 -in -t:5000 16.89/8.05 [2019-03-28 12:48:50,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int 16.89/8.05 [2019-03-28 12:48:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap 16.89/8.05 [2019-03-28 12:48:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start 16.89/8.05 [2019-03-28 12:48:50,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start 16.89/8.05 [2019-03-28 12:48:50,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int 16.89/8.05 [2019-03-28 12:48:50,423 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) 16.89/8.05 [2019-03-28 12:48:50,424 INFO L286 CfgBuilder]: Removed 12 assue(true) statements. 16.89/8.05 [2019-03-28 12:48:50,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:48:50 BoogieIcfgContainer 16.89/8.05 [2019-03-28 12:48:50,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- 16.89/8.05 [2019-03-28 12:48:50,426 INFO L113 PluginConnector]: ------------------------BlockEncodingV2---------------------------- 16.89/8.05 [2019-03-28 12:48:50,426 INFO L271 PluginConnector]: Initializing BlockEncodingV2... 16.89/8.05 [2019-03-28 12:48:50,428 INFO L276 PluginConnector]: BlockEncodingV2 initialized 16.89/8.05 [2019-03-28 12:48:50,429 INFO L185 PluginConnector]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:48:50" (1/1) ... 16.89/8.05 [2019-03-28 12:48:50,451 INFO L313 BlockEncoder]: Initial Icfg 48 locations, 55 edges 16.89/8.05 [2019-03-28 12:48:50,453 INFO L258 BlockEncoder]: Using Remove infeasible edges 16.89/8.05 [2019-03-28 12:48:50,454 INFO L263 BlockEncoder]: Using Maximize final states 16.89/8.05 [2019-03-28 12:48:50,454 INFO L270 BlockEncoder]: Using Minimize states even if more edges are added than removed.=false 16.89/8.05 [2019-03-28 12:48:50,455 INFO L276 BlockEncoder]: Using Minimize states using LBE with the strategy=SINGLE 16.89/8.05 [2019-03-28 12:48:50,456 INFO L296 BlockEncoder]: Using Remove sink states 16.89/8.05 [2019-03-28 12:48:50,457 INFO L171 BlockEncoder]: Using Apply optimizations until nothing changes=true 16.89/8.05 [2019-03-28 12:48:50,457 INFO L179 BlockEncoder]: Using Rewrite not-equals 16.89/8.05 [2019-03-28 12:48:50,485 INFO L185 BlockEncoder]: Using Use SBE 16.89/8.05 [2019-03-28 12:48:50,520 INFO L200 BlockEncoder]: SBE split 22 edges 16.89/8.05 [2019-03-28 12:48:50,525 INFO L70 emoveInfeasibleEdges]: Removed 2 edges and 0 locations because of local infeasibility 16.89/8.05 [2019-03-28 12:48:50,527 INFO L71 MaximizeFinalStates]: 0 new accepting states 16.89/8.05 [2019-03-28 12:48:50,576 INFO L100 BaseMinimizeStates]: Removed 22 edges and 11 locations by large block encoding 16.89/8.05 [2019-03-28 12:48:50,579 INFO L70 RemoveSinkStates]: Removed 1 edges and 1 locations by removing sink states 16.89/8.05 [2019-03-28 12:48:50,580 INFO L70 emoveInfeasibleEdges]: Removed 0 edges and 0 locations because of local infeasibility 16.89/8.05 [2019-03-28 12:48:50,581 INFO L71 MaximizeFinalStates]: 0 new accepting states 16.89/8.05 [2019-03-28 12:48:50,581 INFO L100 BaseMinimizeStates]: Removed 0 edges and 0 locations by large block encoding 16.89/8.05 [2019-03-28 12:48:50,582 INFO L70 RemoveSinkStates]: Removed 0 edges and 0 locations by removing sink states 16.89/8.05 [2019-03-28 12:48:50,582 INFO L313 BlockEncoder]: Encoded RCFG 36 locations, 73 edges 16.89/8.05 [2019-03-28 12:48:50,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:48:50 BasicIcfg 16.89/8.05 [2019-03-28 12:48:50,583 INFO L132 PluginConnector]: ------------------------ END BlockEncodingV2---------------------------- 16.89/8.05 [2019-03-28 12:48:50,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- 16.89/8.05 [2019-03-28 12:48:50,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... 16.89/8.05 [2019-03-28 12:48:50,587 INFO L276 PluginConnector]: TraceAbstraction initialized 16.89/8.05 [2019-03-28 12:48:50,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.03 12:48:49" (1/4) ... 16.89/8.05 [2019-03-28 12:48:50,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476a6605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:48:50, skipping insertion in model container 16.89/8.05 [2019-03-28 12:48:50,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.03 12:48:50" (2/4) ... 16.89/8.05 [2019-03-28 12:48:50,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476a6605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.03 12:48:50, skipping insertion in model container 16.89/8.05 [2019-03-28 12:48:50,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.03 12:48:50" (3/4) ... 16.89/8.05 [2019-03-28 12:48:50,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476a6605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:48:50, skipping insertion in model container 16.89/8.05 [2019-03-28 12:48:50,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 28.03 12:48:50" (4/4) ... 16.89/8.05 [2019-03-28 12:48:50,591 INFO L112 eAbstractionObserver]: Analyzing ICFG theBenchmark.c_BEv2 16.89/8.05 [2019-03-28 12:48:50,602 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION 16.89/8.05 [2019-03-28 12:48:50,610 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. 16.89/8.05 [2019-03-28 12:48:50,627 INFO L257 AbstractCegarLoop]: Starting to check reachability of 16 error locations. 16.89/8.05 [2019-03-28 12:48:50,656 INFO L133 ementStrategyFactory]: Using default assertion order modulation 16.89/8.05 [2019-03-28 12:48:50,657 INFO L382 AbstractCegarLoop]: Interprodecural is true 16.89/8.05 [2019-03-28 12:48:50,657 INFO L383 AbstractCegarLoop]: Hoare is true 16.89/8.05 [2019-03-28 12:48:50,657 INFO L384 AbstractCegarLoop]: Compute interpolants for ForwardPredicates 16.89/8.05 [2019-03-28 12:48:50,657 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE 16.89/8.05 [2019-03-28 12:48:50,658 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION 16.89/8.05 [2019-03-28 12:48:50,658 INFO L387 AbstractCegarLoop]: Difference is false 16.89/8.05 [2019-03-28 12:48:50,658 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA 16.89/8.05 [2019-03-28 12:48:50,658 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== 16.89/8.05 [2019-03-28 12:48:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. 16.89/8.05 [2019-03-28 12:48:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 16.89/8.05 [2019-03-28 12:48:50,679 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:50,680 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:50,680 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:50,686 INFO L82 PathProgramCache]: Analyzing trace with hash 7804023, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:50,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:50,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:50,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:50,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:50,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:50,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:50,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:50,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 16.89/8.05 [2019-03-28 12:48:50,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states 16.89/8.05 [2019-03-28 12:48:50,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. 16.89/8.05 [2019-03-28 12:48:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 16.89/8.05 [2019-03-28 12:48:50,885 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. 16.89/8.05 [2019-03-28 12:48:51,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:51,038 INFO L93 Difference]: Finished difference Result 63 states and 127 transitions. 16.89/8.05 [2019-03-28 12:48:51,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 16.89/8.05 [2019-03-28 12:48:51,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 16.89/8.05 [2019-03-28 12:48:51,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:51,054 INFO L225 Difference]: With dead ends: 63 16.89/8.05 [2019-03-28 12:48:51,054 INFO L226 Difference]: Without dead ends: 36 16.89/8.05 [2019-03-28 12:48:51,058 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 16.89/8.05 [2019-03-28 12:48:51,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. 16.89/8.05 [2019-03-28 12:48:51,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. 16.89/8.05 [2019-03-28 12:48:51,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. 16.89/8.05 [2019-03-28 12:48:51,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 69 transitions. 16.89/8.05 [2019-03-28 12:48:51,099 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 69 transitions. Word has length 4 16.89/8.05 [2019-03-28 12:48:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:51,100 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 69 transitions. 16.89/8.05 [2019-03-28 12:48:51,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. 16.89/8.05 [2019-03-28 12:48:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 69 transitions. 16.89/8.05 [2019-03-28 12:48:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 16.89/8.05 [2019-03-28 12:48:51,101 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:51,101 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:51,101 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash 7804024, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:51,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:51,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:51,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:51,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:51,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 16.89/8.05 [2019-03-28 12:48:51,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 16.89/8.05 [2019-03-28 12:48:51,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 16.89/8.05 [2019-03-28 12:48:51,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 16.89/8.05 [2019-03-28 12:48:51,136 INFO L87 Difference]: Start difference. First operand 36 states and 69 transitions. Second operand 3 states. 16.89/8.05 [2019-03-28 12:48:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:51,249 INFO L93 Difference]: Finished difference Result 36 states and 69 transitions. 16.89/8.05 [2019-03-28 12:48:51,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 16.89/8.05 [2019-03-28 12:48:51,249 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 16.89/8.05 [2019-03-28 12:48:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:51,250 INFO L225 Difference]: With dead ends: 36 16.89/8.05 [2019-03-28 12:48:51,251 INFO L226 Difference]: Without dead ends: 34 16.89/8.05 [2019-03-28 12:48:51,252 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 16.89/8.05 [2019-03-28 12:48:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. 16.89/8.05 [2019-03-28 12:48:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. 16.89/8.05 [2019-03-28 12:48:51,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. 16.89/8.05 [2019-03-28 12:48:51,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 67 transitions. 16.89/8.05 [2019-03-28 12:48:51,258 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 67 transitions. Word has length 4 16.89/8.05 [2019-03-28 12:48:51,258 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:51,258 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 67 transitions. 16.89/8.05 [2019-03-28 12:48:51,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 16.89/8.05 [2019-03-28 12:48:51,259 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 67 transitions. 16.89/8.05 [2019-03-28 12:48:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 16.89/8.05 [2019-03-28 12:48:51,259 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:51,259 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:51,259 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:51,260 INFO L82 PathProgramCache]: Analyzing trace with hash 7804021, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:51,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:51,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:51,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:51,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:51,305 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 16.89/8.05 [2019-03-28 12:48:51,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states 16.89/8.05 [2019-03-28 12:48:51,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. 16.89/8.05 [2019-03-28 12:48:51,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 16.89/8.05 [2019-03-28 12:48:51,306 INFO L87 Difference]: Start difference. First operand 34 states and 67 transitions. Second operand 3 states. 16.89/8.05 [2019-03-28 12:48:51,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:51,401 INFO L93 Difference]: Finished difference Result 34 states and 67 transitions. 16.89/8.05 [2019-03-28 12:48:51,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 16.89/8.05 [2019-03-28 12:48:51,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 16.89/8.05 [2019-03-28 12:48:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:51,402 INFO L225 Difference]: With dead ends: 34 16.89/8.05 [2019-03-28 12:48:51,402 INFO L226 Difference]: Without dead ends: 32 16.89/8.05 [2019-03-28 12:48:51,403 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 16.89/8.05 [2019-03-28 12:48:51,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. 16.89/8.05 [2019-03-28 12:48:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. 16.89/8.05 [2019-03-28 12:48:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. 16.89/8.05 [2019-03-28 12:48:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 63 transitions. 16.89/8.05 [2019-03-28 12:48:51,408 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 63 transitions. Word has length 4 16.89/8.05 [2019-03-28 12:48:51,409 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:51,409 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 63 transitions. 16.89/8.05 [2019-03-28 12:48:51,409 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. 16.89/8.05 [2019-03-28 12:48:51,409 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 63 transitions. 16.89/8.05 [2019-03-28 12:48:51,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.89/8.05 [2019-03-28 12:48:51,410 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:51,410 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:51,410 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:51,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:51,410 INFO L82 PathProgramCache]: Analyzing trace with hash 276195753, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:51,411 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:51,411 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:51,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,412 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,412 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:51,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:51,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 16.89/8.05 [2019-03-28 12:48:51,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states 16.89/8.05 [2019-03-28 12:48:51,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. 16.89/8.05 [2019-03-28 12:48:51,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 16.89/8.05 [2019-03-28 12:48:51,502 INFO L87 Difference]: Start difference. First operand 32 states and 63 transitions. Second operand 6 states. 16.89/8.05 [2019-03-28 12:48:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:51,969 INFO L93 Difference]: Finished difference Result 107 states and 227 transitions. 16.89/8.05 [2019-03-28 12:48:51,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 16.89/8.05 [2019-03-28 12:48:51,970 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 16.89/8.05 [2019-03-28 12:48:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:51,971 INFO L225 Difference]: With dead ends: 107 16.89/8.05 [2019-03-28 12:48:51,972 INFO L226 Difference]: Without dead ends: 105 16.89/8.05 [2019-03-28 12:48:51,972 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 16.89/8.05 [2019-03-28 12:48:51,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. 16.89/8.05 [2019-03-28 12:48:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 30. 16.89/8.05 [2019-03-28 12:48:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. 16.89/8.05 [2019-03-28 12:48:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 59 transitions. 16.89/8.05 [2019-03-28 12:48:51,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 59 transitions. Word has length 8 16.89/8.05 [2019-03-28 12:48:51,981 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:51,982 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 59 transitions. 16.89/8.05 [2019-03-28 12:48:51,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. 16.89/8.05 [2019-03-28 12:48:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 59 transitions. 16.89/8.05 [2019-03-28 12:48:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.89/8.05 [2019-03-28 12:48:51,982 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:51,983 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:51,983 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:51,983 INFO L82 PathProgramCache]: Analyzing trace with hash 276195755, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:51,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:51,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:51,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:52,039 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:52,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 16.89/8.05 [2019-03-28 12:48:52,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states 16.89/8.05 [2019-03-28 12:48:52,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. 16.89/8.05 [2019-03-28 12:48:52,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 16.89/8.05 [2019-03-28 12:48:52,040 INFO L87 Difference]: Start difference. First operand 30 states and 59 transitions. Second operand 5 states. 16.89/8.05 [2019-03-28 12:48:52,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:52,197 INFO L93 Difference]: Finished difference Result 55 states and 107 transitions. 16.89/8.05 [2019-03-28 12:48:52,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 16.89/8.05 [2019-03-28 12:48:52,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 16.89/8.05 [2019-03-28 12:48:52,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:52,199 INFO L225 Difference]: With dead ends: 55 16.89/8.05 [2019-03-28 12:48:52,199 INFO L226 Difference]: Without dead ends: 53 16.89/8.05 [2019-03-28 12:48:52,200 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 16.89/8.05 [2019-03-28 12:48:52,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. 16.89/8.05 [2019-03-28 12:48:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. 16.89/8.05 [2019-03-28 12:48:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. 16.89/8.05 [2019-03-28 12:48:52,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 66 transitions. 16.89/8.05 [2019-03-28 12:48:52,207 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 66 transitions. Word has length 8 16.89/8.05 [2019-03-28 12:48:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:52,207 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 66 transitions. 16.89/8.05 [2019-03-28 12:48:52,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. 16.89/8.05 [2019-03-28 12:48:52,207 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 66 transitions. 16.89/8.05 [2019-03-28 12:48:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.89/8.05 [2019-03-28 12:48:52,208 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:52,208 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:52,209 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:52,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:52,209 INFO L82 PathProgramCache]: Analyzing trace with hash 276195756, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:52,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:52,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:52,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:52,211 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:52,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:52,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:52,307 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:52,307 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 16.89/8.05 [2019-03-28 12:48:52,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states 16.89/8.05 [2019-03-28 12:48:52,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. 16.89/8.05 [2019-03-28 12:48:52,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 16.89/8.05 [2019-03-28 12:48:52,308 INFO L87 Difference]: Start difference. First operand 33 states and 66 transitions. Second operand 7 states. 16.89/8.05 [2019-03-28 12:48:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:52,911 INFO L93 Difference]: Finished difference Result 155 states and 317 transitions. 16.89/8.05 [2019-03-28 12:48:52,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 16.89/8.05 [2019-03-28 12:48:52,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 16.89/8.05 [2019-03-28 12:48:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:52,914 INFO L225 Difference]: With dead ends: 155 16.89/8.05 [2019-03-28 12:48:52,914 INFO L226 Difference]: Without dead ends: 153 16.89/8.05 [2019-03-28 12:48:52,915 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 16.89/8.05 [2019-03-28 12:48:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. 16.89/8.05 [2019-03-28 12:48:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 40. 16.89/8.05 [2019-03-28 12:48:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. 16.89/8.05 [2019-03-28 12:48:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 77 transitions. 16.89/8.05 [2019-03-28 12:48:52,925 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 77 transitions. Word has length 8 16.89/8.05 [2019-03-28 12:48:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:52,925 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 77 transitions. 16.89/8.05 [2019-03-28 12:48:52,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. 16.89/8.05 [2019-03-28 12:48:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 77 transitions. 16.89/8.05 [2019-03-28 12:48:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 16.89/8.05 [2019-03-28 12:48:52,926 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:52,926 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:52,926 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:52,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:52,927 INFO L82 PathProgramCache]: Analyzing trace with hash 304824907, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:52,927 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:52,927 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:52,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:52,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:52,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat 16.89/8.05 [2019-03-28 12:48:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. 16.89/8.05 [2019-03-28 12:48:53,001 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. 16.89/8.05 [2019-03-28 12:48:53,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 16.89/8.05 [2019-03-28 12:48:53,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states 16.89/8.05 [2019-03-28 12:48:53,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. 16.89/8.05 [2019-03-28 12:48:53,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 16.89/8.05 [2019-03-28 12:48:53,002 INFO L87 Difference]: Start difference. First operand 40 states and 77 transitions. Second operand 7 states. 16.89/8.05 [2019-03-28 12:48:53,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. 16.89/8.05 [2019-03-28 12:48:53,185 INFO L93 Difference]: Finished difference Result 60 states and 116 transitions. 16.89/8.05 [2019-03-28 12:48:53,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 16.89/8.05 [2019-03-28 12:48:53,185 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 16.89/8.05 [2019-03-28 12:48:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. 16.89/8.05 [2019-03-28 12:48:53,186 INFO L225 Difference]: With dead ends: 60 16.89/8.05 [2019-03-28 12:48:53,186 INFO L226 Difference]: Without dead ends: 58 16.89/8.05 [2019-03-28 12:48:53,187 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 16.89/8.05 [2019-03-28 12:48:53,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. 16.89/8.05 [2019-03-28 12:48:53,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 33. 16.89/8.05 [2019-03-28 12:48:53,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. 16.89/8.05 [2019-03-28 12:48:53,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 64 transitions. 16.89/8.05 [2019-03-28 12:48:53,193 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 64 transitions. Word has length 8 16.89/8.05 [2019-03-28 12:48:53,193 INFO L84 Accepts]: Finished accepts. word is rejected. 16.89/8.05 [2019-03-28 12:48:53,193 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 64 transitions. 16.89/8.05 [2019-03-28 12:48:53,193 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. 16.89/8.05 [2019-03-28 12:48:53,193 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 64 transitions. 16.89/8.05 [2019-03-28 12:48:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 16.89/8.05 [2019-03-28 12:48:53,194 INFO L394 BasicCegarLoop]: Found error trace 16.89/8.05 [2019-03-28 12:48:53,194 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] 16.89/8.05 [2019-03-28 12:48:53,194 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr15REQUIRES_VIOLATION, ULTIMATE.startErr13REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr14REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr12REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION]=== 16.89/8.05 [2019-03-28 12:48:53,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier 16.89/8.05 [2019-03-28 12:48:53,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1011313216, now seen corresponding path program 1 times 16.89/8.05 [2019-03-28 12:48:53,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS 16.89/8.05 [2019-03-28 12:48:53,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy 16.89/8.05 [2019-03-28 12:48:53,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:53,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:53,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY 16.89/8.05 [2019-03-28 12:48:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 16.89/8.05 [2019-03-28 12:48:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat 16.89/8.05 [2019-03-28 12:48:53,252 INFO L469 BasicCegarLoop]: Counterexample might be feasible 16.89/8.05 [2019-03-28 12:48:53,281 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg 16.89/8.05 [2019-03-28 12:48:53,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.03 12:48:53 BasicIcfg 16.89/8.05 [2019-03-28 12:48:53,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- 16.89/8.05 [2019-03-28 12:48:53,284 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- 16.89/8.05 [2019-03-28 12:48:53,284 INFO L271 PluginConnector]: Initializing BuchiAutomizer... 16.89/8.05 [2019-03-28 12:48:53,287 INFO L276 PluginConnector]: BuchiAutomizer initialized 16.89/8.05 [2019-03-28 12:48:53,287 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 16.89/8.05 [2019-03-28 12:48:53,287 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 16.89/8.05 [2019-03-28 12:48:53,288 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 16.89/8.05 [2019-03-28 12:48:53,288 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 16.89/8.05 [2019-03-28 12:48:53,288 INFO L99 BuchiAutomizer]: Another Plugin discovered errors, I will not analyze termination 16.89/8.05 [2019-03-28 12:48:53,288 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- 16.89/8.05 [2019-03-28 12:48:53,288 INFO L168 Benchmark]: Toolchain (without parser) took 3588.09 ms. Allocated memory was 649.6 MB in the beginning and 749.2 MB in the end (delta: 99.6 MB). Free memory was 563.8 MB in the beginning and 570.1 MB in the end (delta: -6.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,290 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.4 MB. There was no memory consumed. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.11 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 563.8 MB in the beginning and 646.2 MB in the end (delta: -82.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 681.1 MB. Free memory was 646.2 MB in the beginning and 643.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,292 INFO L168 Benchmark]: Boogie Preprocessor took 27.83 ms. Allocated memory is still 681.1 MB. Free memory was 643.1 MB in the beginning and 640.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,293 INFO L168 Benchmark]: RCFGBuilder took 349.63 ms. Allocated memory is still 681.1 MB. Free memory was 640.4 MB in the beginning and 615.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,293 INFO L168 Benchmark]: BlockEncodingV2 took 157.31 ms. Allocated memory is still 681.1 MB. Free memory was 615.3 MB in the beginning and 603.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,294 INFO L168 Benchmark]: TraceAbstraction took 2699.30 ms. Allocated memory was 681.1 MB in the beginning and 749.2 MB in the end (delta: 68.2 MB). Free memory was 603.1 MB in the beginning and 570.1 MB in the end (delta: 33.0 MB). Peak memory consumption was 101.2 MB. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,294 INFO L168 Benchmark]: BuchiAutomizer took 4.25 ms. Allocated memory is still 749.2 MB. Free memory is still 570.1 MB. There was no memory consumed. Max. memory is 50.3 GB. 16.89/8.05 [2019-03-28 12:48:53,298 INFO L337 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### 16.89/8.05 --- Results --- 16.89/8.05 * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: 16.89/8.05 - StatisticsResult: Initial Icfg 16.89/8.05 48 locations, 55 edges 16.89/8.05 - StatisticsResult: Encoded RCFG 16.89/8.05 36 locations, 73 edges 16.89/8.05 * Results from de.uni_freiburg.informatik.ultimate.core: 16.89/8.05 - StatisticsResult: Toolchain Benchmarks 16.89/8.05 Benchmark results are: 16.89/8.05 * CDTParser took 0.17 ms. Allocated memory is still 649.6 MB. Free memory is still 585.4 MB. There was no memory consumed. Max. memory is 50.3 GB. 16.89/8.05 * CACSL2BoogieTranslator took 301.11 ms. Allocated memory was 649.6 MB in the beginning and 681.1 MB in the end (delta: 31.5 MB). Free memory was 563.8 MB in the beginning and 646.2 MB in the end (delta: -82.4 MB). Peak memory consumption was 29.9 MB. Max. memory is 50.3 GB. 16.89/8.05 * Boogie Procedure Inliner took 42.75 ms. Allocated memory is still 681.1 MB. Free memory was 646.2 MB in the beginning and 643.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 50.3 GB. 16.89/8.05 * Boogie Preprocessor took 27.83 ms. Allocated memory is still 681.1 MB. Free memory was 643.1 MB in the beginning and 640.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 50.3 GB. 16.89/8.05 * RCFGBuilder took 349.63 ms. Allocated memory is still 681.1 MB. Free memory was 640.4 MB in the beginning and 615.3 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 50.3 GB. 16.89/8.05 * BlockEncodingV2 took 157.31 ms. Allocated memory is still 681.1 MB. Free memory was 615.3 MB in the beginning and 603.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 50.3 GB. 16.89/8.05 * TraceAbstraction took 2699.30 ms. Allocated memory was 681.1 MB in the beginning and 749.2 MB in the end (delta: 68.2 MB). Free memory was 603.1 MB in the beginning and 570.1 MB in the end (delta: 33.0 MB). Peak memory consumption was 101.2 MB. Max. memory is 50.3 GB. 16.89/8.05 * BuchiAutomizer took 4.25 ms. Allocated memory is still 749.2 MB. Free memory is still 570.1 MB. There was no memory consumed. Max. memory is 50.3 GB. 16.89/8.05 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: 16.89/8.05 - CounterExampleResult [Line: 42]: pointer dereference may fail 16.89/8.05 pointer dereference may fail 16.89/8.05 We found a FailurePath: 16.89/8.05 [L12] int length = __VERIFIER_nondet_int(); 16.89/8.05 [L13] COND FALSE !(length < 1) 16.89/8.05 [L16] char* nondetString = (char*) malloc(length * sizeof(char)); 16.89/8.05 [L17] nondetString[length-1] = '\0' 16.89/8.05 [L18] return nondetString; 16.89/8.05 [L12] int length = __VERIFIER_nondet_int(); 16.89/8.05 [L13] COND TRUE length < 1 16.89/8.05 [L14] length = 1 16.89/8.05 [L16] char* nondetString = (char*) malloc(length * sizeof(char)); 16.89/8.05 [L17] nondetString[length-1] = '\0' 16.89/8.05 [L18] return nondetString; 16.89/8.05 [L27] const char *sc1; 16.89/8.05 [L28] const char *s; 16.89/8.05 [L29] int c; 16.89/8.05 [L30] sc1 = s1 16.89/8.05 [L30] EXPR \read(*sc1) 16.89/8.05 [L30] COND FALSE !(*sc1 != '\0') 16.89/8.05 [L38] return 0; 16.89/8.05 16.89/8.05 - StatisticsResult: Ultimate Automizer benchmark data 16.89/8.05 CFG has 1 procedures, 36 locations, 16 error locations. UNSAFE Result, 2.6s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 1411 SDslu, 520 SDs, 0 SdLazy, 1147 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 233 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1382 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available 16.89/8.05 RESULT: Ultimate proved your program to be incorrect! 16.89/8.05 !SESSION 2019-03-28 12:48:46.476 ----------------------------------------------- 16.89/8.05 eclipse.buildId=unknown 16.89/8.05 java.version=1.8.0_181 16.89/8.05 java.vendor=Oracle Corporation 16.89/8.05 BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US 16.89/8.05 Framework arguments: -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -i /export/starexec/sandbox/benchmark/theBenchmark.c 16.89/8.05 Command-line arguments: -os linux -ws gtk -arch x86_64 -consoleLog -data @user.home/.ultimate -tc ./../AutomizerAndBuchiAutomizerCInlineWithBlockEncoding.xml -s ./../termcomp2017.epf -data /export/starexec/sandbox/tmp -i /export/starexec/sandbox/benchmark/theBenchmark.c 16.89/8.05 16.89/8.05 !ENTRY org.eclipse.core.resources 2 10035 2019-03-28 12:48:53.531 16.89/8.05 !MESSAGE The workspace will exit with unsaved changes in this session. 16.89/8.05 Received shutdown request... 16.89/8.05 Ultimate: 16.89/8.05 GTK+ Version Check 16.89/8.05 EOF